Nocturnal birds, such as owls, are awake at night. But at some point, all birds need to sleep. How do they do it? Not all ...

Someone asked me what they were doing, and I said they were resting or sleeping but I'd never thought much deeper about how birds sleep. Now, after reading Roger Pasquier's new and highly original ...

Some bird species have developed the astonishing ability to sleep while flying. They do that by resting one half of their brain while keeping the other half alert to navigate and avoid obstacles.

has been well documented in sleep research. It’s also well known that marine mammals and some birds sleep with one half of their brain awake. “Researchers noticed the first-night effect for a long ...